of quebec



W. B. POWELL.

MOTOR HEATER AND LIKE DEVICE. APPucmoN msn 1AN.2.\Qv1.

1,304,365. Y, Patented May 20,1919.

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UNTTED sTaTEsA PATENT oEErcE.

WALTER BEBTBAM POWELL, F QUEBEC, CANADA.

Moron-HEATER AND LIKE nEvIcE.

Specification uf LettersAPatent.

Patented May 20, 1919.

Application led January 28, 1918. Serial lio. 214,225.7

To all 'whom t may concern: Be it known that4 I, WALTER BERTRAM POWELLJ a subject of the -King of Great Britain, and resident of 36 Maple avenue, Province of in the city of Quebec, in the Q,uebec, in the Dominion of Canada, have invented certain new andV useful Improvements in Motor-Heaters andl like Devices, of which the following yis the specification.

The invention relates to improvementsin motor heaters and like devices, as described in the present speciication and illustrated conditionfor active service,r.to. avoid the delays and consequent troubles and inconveniences due to the difliculties incidentrto A A B in Eig. 2.

Vthe insulati starting the motor in chilly weather, to facilitate the initial operation of the motor under all conditions and generally vide a heater and heating system, which is cheap and elicient for general use in motor vehiclesA or other places.

In the drawings, Figure 1 is a view showing diagrammatically the heater applied to a solene motor for warming purposes.

'g. 2 is an enlarged vertical sectional view of the heater; v

Fig. 3 -is a plan view of the upper header.

Fig. 4 is a plan view of the lower header.

Fig 5 is a cross sectional view on the line Like numerals of reference indicate corresponding parts in each ligure.

Referring to the drawings, the core 1 is shown as having the coil recess 2 forming the shoulders 3 and 4` at the top and bottom ends respectively, said core being preferably made of porcelain and sup rting the resistance or heating coil 5 in said recess 2 within on 6. I

The inner tube 7 encircles the core 1 and insulation 6 and is here shown as metal though it mayA be of any suitable heat conducting lmaterial. Y The tube 7 and core .l together form a tight joint impervious to water, though the lower end of said tube may be 'stopped by a separate plug in place of the enlarged end 8 of the core. l r

At the upper end, said tube 7 is externally threaded at 9 and screws into the mounting 10 in the inner central lower thread 11, said -inounting having the outer wall 12 and inner wa'll .13 forming the annular water chamber 14, from whichextends the outlet pipe 15, said outer wall having the external thread lbeneath the annular flange 17.

. The outer tube 18 is internally threaded at the upper and lower ends 19 and 20 and screw onv tothe external thread 16 of the mounting 10 and is encircled by the resistance or heating coil 21 outside of the insu-A* lation 22.

The coupling 23V having the crown 24 ex ternally threaded and the Hanges 25 and bolt holes 26 is screwed into the lower end of the outer tube 18. to prol The three way union 27 is formed with the connecting flange 28 formed with the bolt holes 29, throughwhich the bolts '30 secure it to the coupling 23.

The union 27 has its inlet at 31 and no mal outlet at 32 andheater outletl centrally 'at 33 and is externally formed with the smooth joint ends 34 and 35 adapted for a flexible connector.

The binding post plug 3e, having the bind- .ing posts 37 and 38 connected to the inner coil 5, gis-inserted in the mounting 10 and locked therein by the lock nut 39.

- The binding posts 37 and 38 are connected to an electrical circuit apart fromv and foreign to the mechanism contiguous to this device and energized thereby, such as a lighting system in a'garage or other housing Y building.

The inlet 31 of the union 27 is joined by suitable piping to the radiator in motor cars or to the water jacket .outlet of an internal combustion engine inV otherf arrangements and the outlet 32 is connected to the pump as customary in motor car practice, but thev central outlet leads into the heater, So that as soon as one or other of the heatingl coils is energized, the 'ow or the Water is diverted and passes up the annular chamber le and out through the outlet pipe 15,which isl connected to the inlet of the water jacket` of the engine. The outer heating coil is connected to the electric storage battery1 3a, formingpart of the engine or vehicle equipment, bythe wires- 35, thereby completing-a heater circuit\with in the' vehicle made and 'broken by the switch 36. l

The switch 37 beyond the said binding posts controls the connection to the outside Y circuit mentioned in the foregoing. Consequently each heater coil is independently operated for heating the water the annular chamber between the tubes.

Brieily the operationcf the device is as follows -w l The motor car having this device linstalled therein is usually laid up for the night in a garage or shed, where the heating facilities are not such as will maintain the engine in a comfortable and warm condition Afor starting purposes, therefore to 'avoid the Condensatioiis or" -rich mixtures injected into the machine and the consequent accumula-tions of expensive oils and greases, where least needed and most to be avoided, it isdesirable to keep the engine at an even temperature while out of service.V

To accomplish this purpose the vinner heating coil, which is wound in accordance with the ordinary lighting system -ofthe garage or house as the case may be, is energized through' its connection' with said lighting systeml and the hood covered as' usual. n

Theeiect of this is the maintenance of hot water inthe water jacket of the engine during the night time or' periodV during which the car is temporarily out of serviee. It will thus be seen that the usual difficulties, incident tothe starting a dead cold engine are not in evidence and therefore the flooding of the 'engine and accumulations of oils and greases do not occur, therebyv effecting' a great saving, perhaps more V'than suiicient to oiiset the electric current consumed "tosay nothing-.ofthe inconvenience avoided. f

The outer heating coil is local tothe vef-V" hicle and woundin accordance Witlithefelec# f trical installation in saidyehicle, therefore it can vbe used with 'great advantage `for short stops, s uch as may beinade in city s@ etraveling or otherwise, without making anyVY serious inroad on the storage supply..

Various changes maybe made in 'the'cone -struction and arrangement or" the parts in Lacasse this invention valso in the uses thereof, so long las they are within the scope or" the claims for novelty following.

What I claim is l. In' vehicle motor heaters andl like devices, an electric heater formed ci@ concentric tubes of diderent diameters, a mounting forming the top cover of the annular cham- -ber betweensaid tubes and having an out let, a mounting secured to the lower end and forming a connection in the path .of thenormal flow of water, a central core within the inner tube and spaced therefrom forming a coil recess, a plug closing in said core and carrying binding posts, a coil in said recess and connected to said binding posts, a Coil encircling -the outer tube, an electrical system beyond the vehicle and foreign tothe motor installation and l connected to said binding posts for energizing said inner coil, a local electric c'ircuit including means for energizing and connected to/said outer coil and inlet and outlet pipes to and from said annular 2.*In a device of the class described, an annular metal inclosed water chamber havat the upper end and surrounding a center -ing an inletvat the lower endand an 'outlet of non-conducting material, aheating coil surrounding said center and insulated from said metal inclosure, a h'eating coilbetween said metalchamber and saidcore and lated from the former, means for energizing one coil apart from the local installation, `means for energizing the other coil within the local installation, and pipes connecting said waterchamber to a water circulating system. Y

outer tube, an inner tube 'or lesser diameter, a porcelain .core having anged ends and inserted in said-inner tube forming a coil re- 3. In a device' of the class described, an

cess between itself and tube, a heatingl coil in said recess, Vamounting having double walls, forming an annular' water chamber, and internal and external threads, said tubes bengscrewed to said mounting and cont'i-nuing theannular waterlchamben a coupling screw threaded in the lower end of said Youter tube,- a lthree-Way',union secured to said lcoi'iplingf andi` connected "to the water supply beyondthe installation pertaining to the said engine and an outer coil en ."circling'gsaidouter tube` and connected to cooling'system of an engine, a bindingpost al1-'electriccurrent-'supply locall tothe i'nstallation"v pertaining Sto' the, aitoresaid Vengine. x Y

Y e. A motor heater' in a vehicle cinprising water cooling pipes and jacket, :l c011- nect1on- 111 one of sald plpes, a casing mounted ori-said connectionand forming anA unnulmwete'r chgunber communicating with f said pip'esrand having an outlet at the up! Wlth sind. Jacket, an 1nnei' 'electrlc heating coil suitably lnclosed` per. end connected an outerelectric'heating coilencircling the outer wall of said Vannular chamber, one of 10 sind collsvbelng energlzed by the vehicle 1'espectix'ely, diverting the 'flow of the Water 15 from lts mam course for heating purposes. Signed at Montreal, Canada, this 23rd (luy vof'January, 1918.

WALKERv BERTRAM POWELL. 

